Some automotive enthusiasts will argue that conventional oil performs the same as synthetic oil, adding that synthetic oil is simply marketing. Generally speaking however, synthetic oil does offer ...

“Conventional means the engine oil uses only standard mineral-type base oils, whereas synthetic blend oil uses combinations of both synthetic and mineral oil,” says Betner. “Full synthetic ...

If the engine is labeled for synthetic and it’s listed as such in the owner’s manual, moving to conventional oil may risk your coverage in the event of major engine failure. Carmakers can ...